As it swims toward such large fish as groupers or moray eels, it is recognized as a friend about to perform a useful function and is allowed to come close.

• 当它游向诸如鳍科鱼或海鳗这些大鱼时，则被认为是履行有用任务的一位朋友，而被准许靠近。然后濑鱼便开始贪婪地吞食寄生在大鱼身体中的寄生虫。